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svetlana [45]
3 years ago
13

Cos (pi/11)+cos (3pi/11)+cos (5pi/11)+cos (7pi/11)+cos(9pi/11)

Mathematics
1 answer:
WARRIOR [948]3 years ago
4 0
All you have to do is input these terms in a scientific calculator and you would immediately get the answer. However, you should note that the units are in radians. Therefore, make sure that your calculator is in the mode of radians before inputing. Then, you would get an answer of 1/2.
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Step-by-step explanation:

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3 years ago
At a restaurant mike and his three friends decide to divide the bill evening. If each person paid 13 then what was the total bil
Hatshy [7]
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5 0
3 years ago
G(x) = x2 - 2x +3 for g
user100 [1]

Answer:

Since  

x

is on the right side of the equation, switch the sides so it is on the left side of the equation.

x

2

−

2

x

+

3

=

G

(

x

)

Multiply  

G

by  

x

.

x

2

−

2

x

+

3

=

G

x

Subtract  

G

x

from both sides of the equation.

x

2

−

2

x

+

3

−

G

x

=

0

Use the quadratic formula to find the solutions.

−

b

±

√

b

2

−

4

(

a

c

)

2

a

Substitute the values  

a

=

1

,  

b

=

−

2

−

G

, and  

c

=

3

into the quadratic formula and solve for  

x

.

−

(

−

2

−

G

)

±

√

(

−

2

−

G

)

2

−

4

⋅

(

1

⋅

3

)

2

⋅

1

Simplify.

Tap for more steps...

x

=

2

+

G

±

√

G

2

+

4

G

−

8

2

The final answer is the combination of both solutions.

x

=

2

+

G

+

√

G

2

+

4

G

−

8

2

x

=

2

+

G

−

√

G

2

+

4

G

−

8

2

Step-by-step explanation:

5 0
3 years ago
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rewona [7]
Your answer is 4,368
7 0
3 years ago
Read 2 more answers
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